Loved it, excellent
Lost 2 marks for length, would of been better longer.
Drawings and animation were all amazing. Very very good. The shading was good where it was, but it helped the style that there wasnt much shading. Good job, especially for your first thing into the portal.
If you are 13 like your profile says, you've got a lot of time to get better, I cant wait to see more from you, so keep it up.